Annunciator.



4 c. n. moons.

ANNUNGIATOR.'

APPLICATION FILED JULY 6,1907.

921 .385, Patented May 11,1909.

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@Za/ucZefl Emakd UNITED STATES PATENT OFFTCE.

CLAUDE D. ENOOHS, OF LA OROSSE, WISCONSIN, ASSIGNOR TO THE VOTE-BERGERCOMPANY, A CORPORATION OF WISCONSIN.

ANN UNCIATOR.

Specification of Letters Patent.

Application filed July 5, 1907.

Patented May 11, 1909.

Serial No. 382,233.

To all whom it may concern:

Be it known that I, CLAUDE D. ENOOHS, a citizen or" the United States,residing at La ()rosse, in the county of La Crosse and State oflVisconsin, have invented a new and useful Improvement in Annunciators,of which the following is a specification.

My invention relates to improvements in annunciators and has for itsprimary object a device of its kind having a drop shutter which obscuresthe end of the armature tongue from view and restoring mechanism whichcan never exceed a certain amount of force in closing the shutter nomatter how hard the plug is inserted.

To accomplish these objects and such othersas may appear, the inventioncomprises certain novel combinations of parts hereinafter moreparticularly described and claimed.

In the accompanying drawings, forming part of this specification, Figure1 is a side elevation of my invention; Fig. 2 is a plan view lookingdown upon Fig. 1; Fig. 3 is another plan view looking up at Fig. 1; Fig.4 is a longitudinal section of Fig. 1 showing the shutter open and theplug and drop coils removed; Fig. 5 is an enlarged sectional view ofFig. 1 taken on the line X-X; Fig. 6 is a perspective view of theshutter spring; Fig. '7 is a detail view of a portion of the free end ofthe latch bar, and Fig. 8 is a perspective view of the drop coil.

In the drawings are included the drop mechanism A and the jack mechanismB which are associated together in the usual manner to operate the dropshutter and make electrical connections with the various circuits. Thedrop mechanism includes a tubular shell 2, one end of which is closedand the other end open and provided with a rigid core 3. A removabledrop coil 4 having two rigid projecting terminals 5 on its outer end isadapted to slip over the core and into the shell. The inner end of thedrop coil has a small point 6 which passes into an opening 7 in theclosed end of the shell and holds the coil from turning. The outer endof the core 3 is contiguous to an armature 8 and attracts it when thedrop coil is energized. This armature carries a latch 9 and is pivotedin a yoke 10 which is removably fastened to the shell by means of springcatches 11. The armature 8 has openings 12 through which the terminals 501 the drop coil project without coming into. contact therewith. The

closed end of the shell is fastened to an insulating head block 13 whichcarries a swinging drop shutter 14. This shutter is pivoted in the usualmanner as at 15 and tends to fall into a horizontal position, butisnormally held up by the latch bar 9 which engages a lug 16 carried bysaid shutter. A tongue 17 is provided on the lower edge of the dropshutter and is turned into a chamber 18 in the head block. A face plate19 back of the shutter is fastened on the head block by any suitablemeans and is slotted at 20 so that when the shutter closes upon the faceplate this lug 16 recedes into said slot. Below the shutter is a socket21 passing through the head block which is adapted to receive aconnecting plug 22 in the usual manner.

Moving horizontally to close the inner end of the socket 21 is a pair ofslides 23 which are adapted to close together at the inner end of thesocket. Between the inner end of the shell and the head block is a metalplate 24 which has a backwardly bent extension attached to the open endof the shell by means of the screws 25. The adjacent ends of the slides23 are turned inwardly together to form guide faces 26 between which thesleeve 27 of the plug is adapted to pass when inserted through thesocket. The slides are formed with spring arms 28, the tendency of whichis to close the slides together over the inner end of the socket. Ashutter closing spring 29 has'its ends 30 and 31 attached to the slides23 and working freely through slots 32 in the head block and plate. Thisspring is coiled between its ends and formed with a loop 33 which isadapted to close the shutter 1 1 by impinging against the tongue 17 whenthe slides are spread apart by inserting the sleeve of the plug throughthe socket. The spring 29 works freely in the chamber 18 of the headblock. W hen the plug is withdrami from its socket the slides closeautomatically and the shutter is retained in closed position by means ofthe latch 9. The upper ends of the head block and plate 24 are slottedat 3 1 to permit the latch to engage the lug 16 on the shutter. When thedrop coil is energized and the plug removed, the latch bar disengagesthe shutter and allows it to fall. The jack springs 37, 38 and 39 andthe arms 28 of the slides are supported upon the end of the plate 2 1adjoining the open end of the shell by means of screws and are insulatedfrom each other and said plate by pieces of fiber 36 or other suitablematerial.

The jack springs 37, 38 and 39 are of ordinary construction and areadapted to be connected with the line and magnet circuits in thecustomary manner. pieces of the jack springs 37 and 38 are each providedwith a connector 40 which is ivoted thereto and adapted to make metalllcconnection with the rigid terminals 5 of the drop coil. Each connectoris split and preferably made of spring material to cause a firm contactbetween it and the terminal which it engages. The leads 41 which areattached to the shell 2 are for the purpose of providing a night callcircuit in connection with the shutter in the usual way.

l l hen it is desired to remove or repair the drop coil the connectors40 are swung down into the position shown in Fig. 4:. The armature isremoved by disengaging the yoke 10 from the spring catches 11 and thedrop coil may be then drawn out of the shell. When the plug 22 isinserted in the socket after a call has been indicated by the droppingof the shutter 14, the tip and sleeve 27 of said plug respectivelycontact with the jack springs 37 and 39 in the usual way. As the sleeve27 passes through the socket it impinges against the slides and spreadsthem apart. This connection simultaneously draws the loop 33 of thespring 29 down, carrying with it the ton ue 17 and closing the shutterwith its lug in engagement with the latch 9.

In accordance with the patent statutes, I have described the prmciple ofoperation of my invention, together with the apparatus which I nowconsider to represent the best The tail embodiment thereof, but I desireto have it understood that the apparatus shown is only illustrative andthat the invention can be carried out by other means and applied to usesother than those above set forth, within the scope of the followingclaims.

Having described my invention What I claim as new and desire to protectby Letters Patent is:

1. An annunciator comprising a shutter, an electro magnet associatedwith said shutter, an armature provided with an opening and a latch forsaid shutter, a removable coil on said magnet provided with a terminalextending through said opening, and a spring connector pivoted upon asupport adjoining said coil having a split free end and adapted to turnlongitudinally and engage said terminal by the arms on said split end.

2. An annunciator comprising in combination an electro magnet, a dropshutter associated with said magnet, an armature provided with a latchfor said shutter, a removable coil on said magnet provided with aterminal, a connector consisting of a split spring arm pivoted upon asupport adjoining said coil and adapted to engage said terminal betweenits split portions, and means for moving said shutter into engagementwith said latch.

In testimony whereof, .l have signed my name to this specification, inthe presence of two subscribing witnesses.

CLAUDE l). ENOCHS. ll itnesses E. C. BREWER, R. JENsoN.

